Subversion Repositories openrisc_2011-10-31

/* Operating system specific defines to be used when targeting GCC for any

   Solaris 2 system.

   Copyright 2002, 2003, 2004, 2007, 2008, 2009, 2010

   Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 3, or (at your option)

any later version.

GCC is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with GCC; see the file COPYING3.  If not see

<http://www.gnu.org/licenses/>.  */

/* We use stabs-in-elf for debugging, because that is what the native

   toolchain uses.  */

#undef PREFERRED_DEBUGGING_TYPE

#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG

/* Solaris 2 (at least as of 2.5.1) uses a 32-bit wchar_t.  */

#undef WCHAR_TYPE

#define WCHAR_TYPE "long int"

#undef WCHAR_TYPE_SIZE

#define WCHAR_TYPE_SIZE BITS_PER_WORD

/* Solaris 2 uses a wint_t different from the default. This is required

   by the SCD 2.4.1, p. 6-83, Figure 6-66.  */

#undef  WINT_TYPE

#define WINT_TYPE "long int"

#undef  WINT_TYPE_SIZE

#define WINT_TYPE_SIZE BITS_PER_WORD

#define SIG_ATOMIC_TYPE "int"

/* ??? This definition of int8_t follows the system header but does

   not conform to C99.  Likewise int_fast8_t, int_least8_t.  */

#define INT8_TYPE "char"

#define INT16_TYPE "short int"

#define INT32_TYPE "int"

#define INT64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")

#define UINT8_TYPE "unsigned char"

#define UINT16_TYPE "short unsigned int"

#define UINT32_TYPE "unsigned int"

#define UINT64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")

#define INT_LEAST8_TYPE "char"

#define INT_LEAST16_TYPE "short int"

#define INT_LEAST32_TYPE "int"

#define INT_LEAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")

#define UINT_LEAST8_TYPE "unsigned char"

#define UINT_LEAST16_TYPE "short unsigned int"

#define UINT_LEAST32_TYPE "unsigned int"

#define UINT_LEAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")

#define INT_FAST8_TYPE "char"

#define INT_FAST16_TYPE "int"

#define INT_FAST32_TYPE "int"

#define INT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "long long int")

#define UINT_FAST8_TYPE "unsigned char"

#define UINT_FAST16_TYPE "unsigned int"

#define UINT_FAST32_TYPE "unsigned int"

#define UINT_FAST64_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "long long unsigned int")

#define INTPTR_TYPE (LONG_TYPE_SIZE == 64 ? "long int" : "int")

#define UINTPTR_TYPE (LONG_TYPE_SIZE == 64 ? "long unsigned int" : "unsigned int")

/* ??? Note: in order for -compat-bsd to work fully,

   we must somehow arrange to fixincludes /usr/ucbinclude

   and put the result in $(libsubdir)/ucbinclude.  */

#undef CPP_SUBTARGET_SPEC

#define CPP_SUBTARGET_SPEC "\

%{pthreads|pthread:-D_REENTRANT -D_PTHREADS} \

%{!pthreads:%{!pthread:%{threads:-D_REENTRANT -D_SOLARIS_THREADS}}} \

%{compat-bsd:-iwithprefixbefore ucbinclude -I/usr/ucbinclude} \

"

/* Names to predefine in the preprocessor for this target machine.  */

#define TARGET_SUB_OS_CPP_BUILTINS()

#define TARGET_OS_CPP_BUILTINS()                        \

    do {                                                \

        builtin_define_std ("unix");                    \

        builtin_define_std ("sun");                     \

        builtin_define ("__svr4__");                    \

        builtin_define ("__SVR4");                      \

        builtin_assert ("system=unix");                 \

        builtin_assert ("system=svr4");                 \

        /* For C++ we need to add some additional macro \

           definitions required by the C++ standard     \

           library.  */                                 \

        if (c_dialect_cxx ())                           \

          {                                             \

            builtin_define ("_XOPEN_SOURCE=500");       \

            builtin_define ("_LARGEFILE_SOURCE=1");     \

            builtin_define ("_LARGEFILE64_SOURCE=1");   \

            builtin_define ("__EXTENSIONS__");          \

          }                                             \

        TARGET_SUB_OS_CPP_BUILTINS();                   \

    } while (0)

/* The system headers under Solaris 2 are C++-aware since 2.0.  */

#define NO_IMPLICIT_EXTERN_C

/* The sun bundled assembler doesn't accept -Yd, (and neither does gas).

   It's safe to pass -s always, even if -g is not used.  */

#undef ASM_SPEC

#define ASM_SPEC "\

%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \

%{fpic|fpie|fPIC|fPIE:-K PIC} \

%(asm_cpu) \

"

/* We don't use the standard LIB_SPEC only because we don't yet support c++.  */

#undef LIB_SPEC

#define LIB_SPEC \

  "%{compat-bsd:-lucb -lsocket -lnsl -lelf -laio} \

   %{!shared:\

     %{!symbolic:\

       %{pthreads|pthread:-lpthread} \

       %{!pthreads:%{!pthread:%{threads:-lthread}}} \

       %{p|pg:-ldl} -lc}}"

#undef  ENDFILE_SPEC

#define ENDFILE_SPEC "crtend.o%s crtn.o%s"

/* We don't use the standard svr4 STARTFILE_SPEC because it's wrong for us.  */

#undef STARTFILE_SPEC

#define STARTFILE_SPEC "%{!shared: \

                         %{!symbolic: \

                          %{p:mcrt1.o%s} \

                          %{!p: \

                            %{pg:gcrt1.o%s gmon.o%s} \

                            %{!pg:crt1.o%s}}}} \

                        crti.o%s %(startfile_arch) \

                        crtbegin.o%s"

#undef STARTFILE_ARCH32_SPEC

#define STARTFILE_ARCH32_SPEC "%{ansi:values-Xc.o%s} \

                            %{!ansi:values-Xa.o%s}"

#undef STARTFILE_ARCH_SPEC

#define STARTFILE_ARCH_SPEC STARTFILE_ARCH32_SPEC

#undef LINK_ARCH32_SPEC_BASE

#define LINK_ARCH32_SPEC_BASE \

  "%{G:-G} \

   %{YP,*} \

   %{R*} \

   %{compat-bsd: \

     %{!YP,*:%{p|pg:-Y P,%R/usr/ucblib:%R/usr/ccs/lib/libp:%R/usr/lib/libp:%R/usr/ccs/lib:%R/usr/lib} \

             %{!p:%{!pg:-Y P,%R/usr/ucblib:%R/usr/ccs/lib:%R/usr/lib}}} \

             -R %R/usr/ucblib} \

   %{!compat-bsd: \

     %{!YP,*:%{p|pg:-Y P,%R/usr/ccs/lib/libp:%R/usr/lib/libp:%R/usr/ccs/lib:%R/usr/lib} \

             %{!p:%{!pg:-Y P,%R/usr/ccs/lib:%R/usr/lib}}}}"

#undef LINK_ARCH32_SPEC

#define LINK_ARCH32_SPEC LINK_ARCH32_SPEC_BASE

#undef LINK_ARCH_SPEC

#define LINK_ARCH_SPEC LINK_ARCH32_SPEC

/* This should be the same as in svr4.h, except with -R added.  */

#undef  LINK_SPEC

#define LINK_SPEC \

  "%{h*} %{v:-V} \

   %{b} \

   %{!shared:%{!static:%{rdynamic: " RDYNAMIC_SPEC "}}} \

   %{static:-dn -Bstatic} \

   %{shared:-G -dy %{!mimpure-text:-z text}} \

   %{symbolic:-Bsymbolic -G -dy -z text} \

   %(link_arch) \

   %{Qy:} %{!Qn:-Qy}"

/* With Sun ld, -rdynamic is a no-op.  */

#define RDYNAMIC_SPEC ""

/* The Solaris linker doesn't understand constructor priorities.  (The

   GNU linker does support constructor priorities, so GNU ld

   configuration files for Solaris override this setting.)  */

#undef SUPPORTS_INIT_PRIORITY

#define SUPPORTS_INIT_PRIORITY 0

/* This defines which switch letters take arguments.

   It is as in svr4.h but with -R added.  */

#undef SWITCH_TAKES_ARG

#define SWITCH_TAKES_ARG(CHAR) \

  (DEFAULT_SWITCH_TAKES_ARG(CHAR) \

   || (CHAR) == 'R' \

   || (CHAR) == 'h' \

   || (CHAR) == 'z')

#define STDC_0_IN_SYSTEM_HEADERS 1

/*

 * Attempt to turn on access permissions for the stack.

 *

 * _SC_STACK_PROT is only defined for post 2.6, but we want this code

 * to run always.  2.6 can change the stack protection but has no way to

 * query it.

 *

 */

/* sys/mman.h is not present on some non-Solaris configurations

   that use sol2.h, so ENABLE_EXECUTE_STACK must use a magic

   number instead of the appropriate PROT_* flags.  */

#define ENABLE_EXECUTE_STACK                                    \

                                                                        \

/* #define STACK_PROT_RWX (PROT_READ | PROT_WRITE | PROT_EXEC) */       \

                                                                        \

static int need_enable_exec_stack;                                      \

                                                                        \

static void check_enabling(void) __attribute__ ((constructor));         \

static void check_enabling(void)                                        \

{                                                                       \

  extern long sysconf(int);                                             \

                                                                        \

  int prot = (int) sysconf(515 /* _SC_STACK_PROT */);                   \

  if (prot != 7 /* STACK_PROT_RWX */)                                   \

    need_enable_exec_stack = 1;                                         \

}                                                                       \

                                                                        \

extern void __enable_execute_stack (void *);                            \

void                                                                    \

__enable_execute_stack (void *addr)                                     \

{                                                                       \

  extern int mprotect(void *, size_t, int);                             \

  if (!need_enable_exec_stack)                                          \

    return;                                                             \

  else {                                                                \

    long size = getpagesize ();                                         \

    long mask = ~(size-1);                                              \

    char *page = (char *) (((long) addr) & mask);                       \

    char *end  = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \

                                                                        \

    if (mprotect (page, end - page, 7 /* STACK_PROT_RWX */) < 0)        \

      perror ("mprotect of trampoline code");                           \

  }                                                                     \

}

/* Support Solaris-specific format checking for cmn_err.  */

#define TARGET_N_FORMAT_TYPES 1

#define TARGET_FORMAT_TYPES solaris_format_types

/* #pragma init and #pragma fini are implemented on top of init and

   fini attributes.  */

#define SOLARIS_ATTRIBUTE_TABLE                                         \

  { "init",      0, 0, true,  false,  false, NULL },                    \

  { "fini",      0, 0, true,  false,  false, NULL }

/* Solaris/x86 as and gas support the common ELF .section/.pushsection

   syntax.  */

#define PUSHSECTION_FORMAT      "\t.pushsection\t%s\n"

/* This is how to declare the size of a function.  For Solaris, we output

   any .init or .fini entries here.  */

#undef ASM_DECLARE_FUNCTION_SIZE

#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)            \

  do                                                            \

    {                                                           \

      if (!flag_inhibit_size_directive)                         \

        ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                 \

      solaris_output_init_fini (FILE, DECL);                    \

    }                                                           \

  while (0)

/* Solaris 'as' has a bug: a .common directive in .tbss section

   behaves as .tls_common rather than normal non-TLS .common.  */

#undef  ASM_OUTPUT_ALIGNED_COMMON

#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN)              \

  do                                                                    \

    {                                                                   \

      if (TARGET_SUN_TLS                                                \

          && in_section                                                 \

          && ((in_section->common.flags & (SECTION_TLS | SECTION_BSS))  \

              == (SECTION_TLS | SECTION_BSS)))                          \

        switch_to_section (bss_section);                                \

      fprintf ((FILE), "%s", COMMON_ASM_OP);                            \

      assemble_name ((FILE), (NAME));                                   \

      fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n",          \

               (SIZE), (ALIGN) / BITS_PER_UNIT);                        \

    }                                                                   \

  while (0)

#ifndef USE_GAS

#undef TARGET_ASM_ASSEMBLE_VISIBILITY

#define TARGET_ASM_ASSEMBLE_VISIBILITY solaris_assemble_visibility

#endif

extern GTY(()) tree solaris_pending_aligns;

extern GTY(()) tree solaris_pending_inits;

extern GTY(()) tree solaris_pending_finis;

/* Allow macro expansion in #pragma pack.  */

#define HANDLE_PRAGMA_PACK_WITH_EXPANSION